--- product_id: 46777993 title: "Auto Relay U1914 with 14AWG Wire Harness, 12V DC 30/40A SPDT 5-Pin (Pack of 2)" brand: "ulincos" price: "€ 20.08" currency: EUR in_stock: true category: "Ulincos" url: https://www.desertcart.sk/products/46777993-auto-relay-u1914-with-14awg-wire-harness-12v-dc-30 store_origin: SK region: Slovakia --- # 40A max load power 5-pin SPDT versatile control 14AWG wire harness included Auto Relay U1914 with 14AWG Wire Harness, 12V DC 30/40A SPDT 5-Pin (Pack of 2) **Brand:** ulincos **Price:** € 20.08 **Availability:** ✅ In Stock ## Summary > ⚡ Power your ride with precision and ease—because your car deserves the best! ## Quick Answers - **What is this?** Auto Relay U1914 with 14AWG Wire Harness, 12V DC 30/40A SPDT 5-Pin (Pack of 2) by ulincos - **How much does it cost?** € 20.08 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/46777993-auto-relay-u1914-with-14awg-wire-harness-12v-dc-30) ## Best For - ulincos enthusiasts ## Why This Product - Trusted ulincos brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Modular & Clean Mounting:** Male and female slide sockets allow stacking multiple relays neatly for a professional, clutter-free look. - • **Plug & Play Installation:** Integrated 14AWG wire harness simplifies setup—just unplug and swap relays without hassle. - • **Seamless Circuit Switching:** SPDT 5-pin design lets you toggle between bright and dim or open/close circuits with precision. - • **Universal Automotive Compatibility:** Perfect for headlights, seat warmers, alarms, and sound systems—upgrade your ride’s electrical control. - • **Power Up to 40 Amps with Confidence:** Handles heavy-duty automotive loads effortlessly, ensuring your circuits stay robust and reliable. ## Overview The Ulincos U1914 Auto Relay Pack of 2 features a 12V DC SPDT 5-pin relay rated for 40A (Normally Open) and 30A (Normally Closed) loads. Equipped with a 14AWG wire harness for quick, clean installation, these relays are ideal for automotive applications including lighting, seat warmers, and sound systems. Designed for modular mounting and reliable switching, they offer professional-grade control for any 12V vehicle circuit. ## Description About the Relay Relay is an electrical control device that usually used in automatic control circuit. The relay in fact is an automatic switch which uses a smaller current to control a larger current. What's the Relay Used for Compatible with almost all automobiles and devices equipped with a 12V DC power supply. Like starter kills, power door lock/actuator control, change a low current output to high current, add ignition/accessory outputs, control motors/other electronics. It is also suitable for automobile used for control, alarms, horn, headlight and more. About the Relay Pins Pins 85 & 86 - are used to turn 'on' the relay. You need a positive (+) and negative (-) power source to turn on the relay. - Pin 85 - is usually negative (-) - Pin 86 - is usually positive (+) Pin 30 - is either a (+) or (-) source that feeds Pin 87 or Pin 87a Pin 87 - when the relay is 'on': Pin 30 and Pin 87 are connected Pin 87a - when the relay is 'off': Pin 30 and Pin 87a are connected About the Wire harness Five 14AWG wires, rated for 20A: #Black (85) – to Ground #White (86) – to Switch or Trigger #Blue (30)- to Battery Positive #Red (87a)- Normally Closed Contact #Yellow (87) - Normally Open Contact What's Note * The relay is rated for 30A, while the socket 14AWG wires are not big enough for the rated 30/40 amps. If you are intending to run 30 amps continuously, you could remove the spade contacts from the connector, carefully open the crimps securing the wire to the contact and recrimp/solder 10 gauge wires to it. Also, you can use 6.3 mm female connectors to connect directly to the relay pins. The relay should be good for 30 amps. About the Package 2 X Relay ## Features - SPDT Relay - Single Pole Double Throw, you can use them to open or close a circuit -- or go from bright to dim on your headlights - 30/40A Relay – It is rated to handle 40 amps of load at 12V DC in the Normally Open position (PIN 87), and 30 amps of load at 12V DC in the Normally Closed position (PIN 87a). You can use it in any circuit less than 30A - With the Wire Harness - Makes relay installation a breeze. If one goes bad, just unplug it from the socket and plug in a new one - Each socket has a male and female slide. You can connect as many of these together next to each other as possible. This makes mounting them easy and clean looking - Wide range of use, can be used in automotive setup, seat warming, vehicle lighting system, car sound system and various other applications ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B06ZY84HZL | | Best Sellers Rank | #369,189 in Automotive ( See Top 100 in Automotive ) #129 in Automotive Replacement Relay Control Module Relays | | Brand Name | Ulincos | | Coil Voltage | 12 Volts | | Connector Type | Quick Connect | | Contact Current Rating | 30 Amps | | Contact Type | 2no 2nc | | Current Rating | 40 Amps | | Customer Reviews | 4.6 4.6 out of 5 stars (521) | | Manufacturer | Ulincos | | Maximum Switching Current | 40 Amps | | Minimum Switching Voltage | 12 Volts (DC) | | Model | U1914 | | Mounting Type | Pole | | Operation Mode | Automatic | | Part Number | U1914 | | Unit Count | 2.0 Count | | Wattage | 360 watts | ## Product Details - **Brand:** Ulincos - **Connector Type:** Quick Connect - **Contact Type:** 2no 2nc - **Current Rating:** 40 Amps - **Mounting Type:** Pole ## Images ![Auto Relay U1914 with 14AWG Wire Harness, 12V DC 30/40A SPDT 5-Pin (Pack of 2) - Image 1](https://m.media-amazon.com/images/I/61VDVD91XQL.jpg) ![Auto Relay U1914 with 14AWG Wire Harness, 12V DC 30/40A SPDT 5-Pin (Pack of 2) - Image 2](https://m.media-amazon.com/images/I/61IW-6mu6AL.jpg) ![Auto Relay U1914 with 14AWG Wire Harness, 12V DC 30/40A SPDT 5-Pin (Pack of 2) - Image 3](https://m.media-amazon.com/images/I/616TVeuS8UL.jpg) ![Auto Relay U1914 with 14AWG Wire Harness, 12V DC 30/40A SPDT 5-Pin (Pack of 2) - Image 4](https://m.media-amazon.com/images/I/61sSC8b7n9L.jpg) ![Auto Relay U1914 with 14AWG Wire Harness, 12V DC 30/40A SPDT 5-Pin (Pack of 2) - Image 5](https://m.media-amazon.com/images/I/71lCbMzqaoL.jpg) ## Frequently Bought Together - Ulincos Auto Relay U1914 with 14AWG Wire Harness, 12V DC 30/40A SPDT 5-Pin (Pack of 2) - MCIGICM 12 AWG Inline Fuse Holder with 30A ATC/ATO Blade Fuse, 5 Pack - Gebildet JD1912 Car Relay Harness 12V 40A 4 Pin SPST 12AWG Harness Sockets with Color-Labeled Wires for Automotive Truck Van Motorcycle Boat (Pack of 2) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sk/products/46777993-auto-relay-u1914-with-14awg-wire-harness-12v-dc-30](https://www.desertcart.sk/products/46777993-auto-relay-u1914-with-14awg-wire-harness-12v-dc-30) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-08-23*